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Fix highlighting of const patterns

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This commit is contained in:
Aleksey Kladov 2020-02-28 16:36:14 +01:00
parent 209eb32796
commit 5ebfcb9cb7
5 changed files with 60 additions and 15 deletions
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8
crates/ra_hir/src/semantics.rs
View file

@ -18,8 +18,8 @@ use crate::{
db::HirDatabase,
source_analyzer::{resolve_hir_path, ReferenceDescriptor, SourceAnalyzer},
source_binder::{ChildContainer, SourceBinder},
Function, HirFileId, InFile, Local, MacroDef, Module, Name, Origin, Path, PathResolution,
ScopeDef, StructField, Trait, Type, TypeParam, VariantDef,
Function, HirFileId, InFile, Local, MacroDef, Module, ModuleDef, Name, Origin, Path,
PathResolution, ScopeDef, StructField, Trait, Type, TypeParam, VariantDef,
};
use ra_prof::profile;
@ -129,6 +129,10 @@ impl<'db, DB: HirDatabase> Semantics<'db, DB> {
self.analyze(path.syntax()).resolve_path(self.db, path)
}
pub fn resolve_bind_pat_to_const(&self, pat: &ast::BindPat) -> Option<ModuleDef> {
self.analyze(pat.syntax()).resolve_bind_pat_to_const(self.db, pat)
}
// FIXME: use this instead?
// pub fn resolve_name_ref(&self, name_ref: &ast::NameRef) -> Option<???>;

31
crates/ra_hir/src/source_analyzer.rs
View file

@ -11,9 +11,9 @@ use either::Either;
use hir_def::{
body::{
scope::{ExprScopes, ScopeId},
BodySourceMap,
Body, BodySourceMap,
},
expr::{ExprId, PatId},
expr::{ExprId, Pat, PatId},
resolver::{resolver_for_scope, Resolver, TypeNs, ValueNs},
AsMacroCall, DefWithBodyId,
};
@ -25,8 +25,8 @@ use ra_syntax::{
};
use crate::{
db::HirDatabase, Adt, Const, EnumVariant, Function, Local, MacroDef, Path, Static, Struct,
Trait, Type, TypeAlias, TypeParam,
db::HirDatabase, Adt, Const, EnumVariant, Function, Local, MacroDef, ModuleDef, Path, Static,
Struct, Trait, Type, TypeAlias, TypeParam,
};
/// `SourceAnalyzer` is a convenience wrapper which exposes HIR API in terms of
@ -35,6 +35,7 @@ use crate::{
pub(crate) struct SourceAnalyzer {
file_id: HirFileId,
pub(crate) resolver: Resolver,
body: Option<Arc<Body>>,
body_source_map: Option<Arc<BodySourceMap>>,
infer: Option<Arc<InferenceResult>>,
scopes: Option<Arc<ExprScopes>>,
@ -66,7 +67,7 @@ impl SourceAnalyzer {
node: InFile<&SyntaxNode>,
offset: Option<TextUnit>,
) -> SourceAnalyzer {
let (_body, source_map) = db.body_with_source_map(def);
let (body, source_map) = db.body_with_source_map(def);
let scopes = db.expr_scopes(def);
let scope = match offset {
None => scope_for(&scopes, &source_map, node),
@ -75,6 +76,7 @@ impl SourceAnalyzer {
let resolver = resolver_for_scope(db, def, scope);
SourceAnalyzer {
resolver,
body: Some(body),
body_source_map: Some(source_map),
infer: Some(db.infer(def)),
scopes: Some(scopes),
@ -88,6 +90,7 @@ impl SourceAnalyzer {
) -> SourceAnalyzer {
SourceAnalyzer {
resolver,
body: None,
body_source_map: None,
infer: None,
scopes: None,
@ -197,6 +200,24 @@ impl SourceAnalyzer {
self.resolver.resolve_path_as_macro(db, path.mod_path()).map(|it| it.into())
}
pub(crate) fn resolve_bind_pat_to_const(
&self,
db: &impl HirDatabase,
pat: &ast::BindPat,
) -> Option<ModuleDef> {
let pat_id = self.pat_id(&pat.clone().into())?;
let body = self.body.as_ref()?;
let path = match &body[pat_id] {
Pat::Path(path) => path,
_ => return None,
};
let res = resolve_hir_path(db, &self.resolver, &path)?;
match res {
PathResolution::Def(def) => Some(def),
_ => None,
}
}
pub(crate) fn resolve_path(
&self,
db: &impl HirDatabase,

15
crates/ra_ide/src/snapshots/highlighting.html
View file

@ -65,10 +65,17 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="variable mutable">y</span>;
}
<span class="keyword">enum</span> <span class="enum">E</span>&lt;<span class="type_param">X</span>&gt; {
<span class="enum_variant">V</span>(<span class="type_param">X</span>)
<span class="keyword">enum</span> <span class="enum">Option</span>&lt;<span class="type_param">T</span>&gt; {
<span class="enum_variant">Some</span>(<span class="type_param">T</span>),
<span class="enum_variant">None</span>,
}
<span class="keyword">use</span> <span class="enum">Option</span>::*;
<span class="keyword">impl</span>&lt;<span class="type_param">X</span>&gt; <span class="enum">E</span>&lt;<span class="type_param">X</span>&gt; {
<span class="keyword">fn</span> <span class="function">new</span>&lt;<span class="type_param">T</span>&gt;() -&gt; <span class="enum">E</span>&lt;<span class="type_param">T</span>&gt; {}
<span class="keyword">impl</span>&lt;<span class="type_param">T</span>&gt; <span class="enum">Option</span>&lt;<span class="type_param">T</span>&gt; {
<span class="keyword">fn</span> <span class="function">and</span>&lt;<span class="type_param">U</span>&gt;(<span class="keyword">self</span>, <span class="variable">other</span>: <span class="enum">Option</span>&lt;<span class="type_param">U</span>&gt;) -&gt; <span class="enum">Option</span>&lt;(<span class="type_param">T</span>, <span class="type_param">U</span>)&gt; {
<span class="keyword control">match</span> <span class="variable">other</span> {
<span class="enum_variant">None</span> =&gt; <span class="macro">todo</span><span class="macro">!</span>(),
<span class="variable">Nope</span> =&gt; <span class="variable">Nope</span>,
}
}
}</code></pre>

15
crates/ra_ide/src/syntax_highlighting/tests.rs
View file

@ -50,12 +50,19 @@ fn main() {
y;
}
enum E<X> {
V(X)
enum Option<T> {
Some(T),
None,
}
use Option::*;
impl<X> E<X> {
fn new<T>() -> E<T> {}
impl<T> Option<T> {
fn and<U>(self, other: Option<U>) -> Option<(T, U)> {
match other {
None => todo!(),
Nope => Nope,
}
}
}
"#
.trim(),

6
crates/ra_ide_db/src/defs.rs
View file

@ -90,6 +90,12 @@ impl NameClass {
}
pub fn classify_name(sema: &Semantics<RootDatabase>, name: &ast::Name) -> Option<NameClass> {
if let Some(bind_pat) = name.syntax().parent().and_then(ast::BindPat::cast) {
if let Some(def) = sema.resolve_bind_pat_to_const(&bind_pat) {
return Some(NameClass::ConstReference(NameDefinition::ModuleDef(def)));
}
}
classify_name_inner(sema, name).map(NameClass::NameDefinition)
}